Ritchie, D. A. (1999). American history: The modern era since 1865 (Teacher's wraparound ed., multimedia ed.). New York: Glencoe/McGraw-Hill.
Chicago Style aipamenaRitchie, Donald A. American History: The Modern Era Since 1865. Teacher's wraparound ed., multimedia ed. New York: Glencoe/McGraw-Hill, 1999.
MLA aipamenaRitchie, Donald A. American History: The Modern Era Since 1865. Teacher's wraparound ed., multimedia ed. New York: Glencoe/McGraw-Hill, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.